I use stable and release, but always manual updates. That way I know exactly when it's updated. It's at a time when I have a few minutes to check everything out to make sure there are no problems and if there are, fix them.

I usually run on the stable build, but if there's a new feature in the release that I like, I go with it then switch back to stable with the next stable build. I don't use edge because there are more risks and I do have customers who would prefer their sites to stay up.